Setyawan, Firsta Agung (2019) Peningkatan Konduktivitas Listrik LiFePO4 Sebagai Material Baterai Dengan Campuran Grafena Oksida Tereduksi Dari Tempurung Kelapa Tua. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dalam penelitian ini, material katoda LiFePO4 diberi pelapisan rGO bertujuan untuk mengetahui pengaruh pelapisan rGO terhadap nilai konduktivitas listrik telah dilakukan. Bahan dasar dari LiFePO4 yaitu FeCl2.4H2O, Li2CO3, dan NH4H2PO4 serta bahan dasar dari rGO yaitu arang tempurung kelapa tua. Sintesis LiFePO4 dilakukan dengan menggunakan metode sol-gel kemudian dilanjutkan dengan metode pencampuran mekanik untuk proses pelapisan LiFePO4 oleh rGO. Dari hasil Uji XRD pada material LiFePO4 telah terbentuk satu fasa, yakni olivine, sedangkan untuk sampel karbon telah terbentuk fasa rGO dengan komposisi unsur karbon dan oksigen sebagai unsur utamanya. Selanjutnya, pengujian morfologi menggunakan SEM telah menunjukkan terdapat campuran LiFePO4/rGO, dimana partikel kecil olivine terlihat berada diatas lapisan rGO. Dalam proses pencampuran dilakukan variasi perbandingan massa antara LiFePO4 dan rGO, yakni 85%:15% dan 70%:30% secara berurutan. Nilai konduktivitas tertinggi didapat pada perbandingan massa LiFePO4 dan rGO sebesar 70%:30% dengan nilai 784 x 10-7 S/m.
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In this project, the cathode material of LiFePO4 mixed with rGO layer, which is meant to increase electrical conductivity has been conducted. The main material of LiFePO4 consists of FeCl2.4H2O, Li2CO3 and NH4H2PO4 and the basic material of rGO powder which is made of old coconut shell. The LiFePO4 synthesis have been done using the sol-gel method and continued with mechanical mixture for layering proses of rGO with LiFePO4. From the XRD characterization, LiFePO4 phase has been formed to be a single phase of olivine, while for the carbon sample the rGO phase has been formed and contains carbon and oxigen as the main elements. Further, the morphological examination using SEM has demonstrated the mixture of LiFePO4/rGO, where the smaller rounded olivine looks to be on the rGO plate. In this mixture process the comparison and variation of LiFePO4 mass and rGO are 85% 15% and 70%:30% orderly. The highest conductivity obtained to be 784 x 10-7 S/m for the mixture of LiFePO4 : rGO = 70%:30%.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSFi 671.73 Set p-1 |
| Uncontrolled Keywords: | Konduktivitas Listrik, LiFePO4, metode sol-gel, pelapisan rGO |
| Subjects: | Q Science Q Science > QC Physics Q Science > QC Physics > QC610.3 Electric conductivity |
| Divisions: | Faculty of Natural Science > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Setyawan Firsta Agung |
| Date Deposited: | 25 Mar 2025 02:49 |
| Last Modified: | 25 Mar 2025 02:49 |
| URI: | http://repository.its.ac.id/id/eprint/67196 |
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